US6380509B1 - Method and device for the manufacture of connection ends on metal hoses - Google Patents
Method and device for the manufacture of connection ends on metal hoses Download PDFInfo
- Publication number
- US6380509B1 US6380509B1 US09/433,575 US43357599A US6380509B1 US 6380509 B1 US6380509 B1 US 6380509B1 US 43357599 A US43357599 A US 43357599A US 6380509 B1 US6380509 B1 US 6380509B1
- Authority
- US
- United States
- Prior art keywords
- laser beam
- strip wound
- hose
- wound hose
- endless
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L11/00—Hoses, i.e. flexible pipes
- F16L11/14—Hoses, i.e. flexible pipes made of rigid material, e.g. metal or hard plastics
- F16L11/16—Hoses, i.e. flexible pipes made of rigid material, e.g. metal or hard plastics wound from profiled strips or bands
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/20—Bonding
- B23K26/21—Bonding by welding
- B23K26/24—Seam welding
- B23K26/28—Seam welding of curved planar seams
Definitions
- the invention concerns a method for producing connection ends on metal hoses which are separated off endless hoses, wherein overlapping metal layers are fixed by means of laser welding prior to separation, as well as a device for the manufacture of connection ends on metal hose pieces which are separated off endless hose, wherein overlapping metal layers are fixed by means of welding prior to separation.
- metal hose are manufactured by helically winding one or a plurality of layers of metal band.
- the positive interlocking connection between neighboring band regions and/or layers is effected by V-shaped profiling or folding.
- the assembly and production lines for hoses of this type produce endless hose or hose sections having a length of several meters.
- This purpose is achieved in accordance with the invention using a method of the above mentioned kind, wherein a laser beam is guided continuously over the entire periphery of the hose piece for production of the welding seam, the laser beam modulated with a cyclic motion through a finite angle with respect to the peripheral direction of the hose piece.
- the purpose underlying the invention is also solved by a device categorizing the invention having a periodically functioning deflection device for deflecting the laser beam through a finite angle with respect to the peripheral direction of the metal hose.
- the above mentioned sweeping motion can subtend a finite angle with respect to the axis of the hose piece, in particular, in a range between minus 60° to plus 60° relative to the hose axis.
- This provides an additional degree of freedom for configuring the geometry of the tacking seam.
- a preferred embodiment provides that the sweeping motion be exercised parallel to the axis of the hose piece. This permits, in particular, sinusoidal or triangular-shaped (zigzag) seams which are normally and preferentially effected as a single seam. It is thereby no longer necessary to create a double seam.
- the method in accordance with the invention has the substantial advantage that an interlocking material connection is effected directly up to the cutting plane, normally lying in the points of inflection of the welding seam. Typical amplitudes are in the range between 0.5-2 mm and preferentially between 0.5-0.7 mm. Control of the laser power and/or of the laser power density within the welding path can change the path energy to minimize the heat deposition for adaptation to the respective tubing geometries and/or to change the depth of the weld.
- the separation of a hose end of an endless hose having a welding seam provided in the above mentioned manner can be preferentially effected using laser beam cutting, wherein a preferred embodiment provides that the separation of the hose ends from endless hose is effected directly following welding in the same processing step.
- the separation of the hose pieces is first effected after complete production of the welding seam about the entire periphery of the endless hose, wherein the separation is then preferably carried out with the same laser which produced the welding seam.
- Additional preferred embodiments of the method provide that the cyclic motion of the laser beam in the axial direction of the hose piece for producing the peripheral laser welding seam is effected with a substantially higher frequency than the frequency of revolution of the endless hose and, in particular, that the cyclic motion has a frequency on the order of 150-250 Hz.
- the deflection device for the laser beam preferentially comprises a deflection mirror which is adapted for steering.
- FIG. 1 shows a section of strip wound hose prior to separation having a zigzag or triangular-shaped welding seam
- FIG. 2 shows a section of strip wound hose having a sinusoidal welding seam
- FIG. 3 shows a schematic representation of the deflection device for modulating the laser beam.
- a sinusoidal or zigzag welding seam is produced over the entire periphery of a strip wound hose 1 (for example, an Agraff hose) by modulating the relative motion of a laser beam about the periphery of the strip wound hose 1 with a periodic motion parallel to the axis A of the strip wound hose 1 at a modulation frequency which is higher than the rotation frequency.
- the relative rotation between the laser and the hose is of importance. From a practical point of view, the strip wound hose is rotated and the laser beam is steered back and forth in the direction of the rotation axis only. In this fashion, the zigzag or triangular-shaped welding seam 2 shown in FIG.
- the amplitude of the cyclic motion in the direction of axis A is preferentially in the sub-millimeter range (that is to say ⁇ 1 mm) and, in particular, in a range of approximately 0.5-0.7 mm, wherein the weldment band width can lie in a range between 0.25-0.5 mm.
- the layers of the strip wound hose 1 in the vicinity of the ends 3 , 4 of the hose pieces 6 , 7 produced following separation are connected to each other and fixed in place.
- a separation of the hose pieces 6 , 7 which are to be produced can be effected along the separation plane A, approximately in the middle of the sinusoidal or zigzag seam 21 wherein the separation plane A is preferentially perpendicular to axis A.
- the width of the cut assumes values of approximately 0.25 mm
- FIG. 2 shows a sinusoidal welding seam 2 on a strip wound hose 1 produced in the manner described above
- the modulating motion of the laser beam is produced by a device for periodic deflection of the laser beam.
- a device for periodic deflection of the laser beam could be a so-called freely programmable optical scanner device having movable mirrors, by means of which the laser beam can be sidewardly deflected back and forth, i.e. perpendicular to its principal direction of motion and parallel to the direction of axis A of the strip wound hose 7 .
- the procedure in accordance with the invention guarantees that the hose pieces 6 , 7 have neither sprung band ends at the separation line following separation of the two hose pieces 6 , 7 nor points, in particular, if the above described geometric conditions are maintained.
- the production of the separation seam 8 can be effected in a second processing step using the same laser by once more guiding the laser about the strip wound hose (or by turning same relative to the laser) after production of the welding seam. Separation is effected with higher power and optionally higher focusing using a high pressure, inert gas module having nitrogen as the working gas
- a cutting laser can be introduced directly behind the laser used to produce the welding seam 2 , so that a separation of the strip wound hose 2 into the pieces 3 and 4 can be effected practically in the same processing step and directly following production of the welding seam.
- the welding and cutting speeds can be of an order of magnitude between 6-7 m/min, wherein cycle times for welding or cutting strip wound hoses of conventional diameters are somewhat longer that about 1 sec.
- the welding process effected in the separation region leads to practically perfectly even cuts for the hose pieces produced in accordance with the invention, which do not require any post-processing.
- the laser 9 emits a laser beam 10 which is incident on the deflection device 11 .
- the deflection device 11 comprises a mirror 13 mounted for pivoting on a pivot support 12 to deflect the laser beam 10′ up and down through a finite angle, as is schematically indicated by the double arrow.
- the deflected beam 10′ is incident on the strap wound hose 1 and sweeps through a path substantially parallel to axis A of the hose 1 to pass back and forth through separation seam region 8 and between hose end sections 3 and 4 .
- Means 14 are provided for rotating the hose 1 relative to the laser beam 10 to sweep the beam about the girth of the hose 1 .
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Laser Beam Processing (AREA)
- Branch Pipes, Bends, And The Like (AREA)
Abstract
Description
Claims (12)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19851173A DE19851173C1 (en) | 1998-11-06 | 1998-11-06 | Manufacturing connection ends at metal tube part, fixing overlapping metal layers of tube pieces through laser welding before separating |
DE19851173 | 1998-11-06 |
Publications (1)
Publication Number | Publication Date |
---|---|
US6380509B1 true US6380509B1 (en) | 2002-04-30 |
Family
ID=7886892
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US09/433,575 Expired - Fee Related US6380509B1 (en) | 1998-11-06 | 1999-11-04 | Method and device for the manufacture of connection ends on metal hoses |
Country Status (3)
Country | Link |
---|---|
US (1) | US6380509B1 (en) |
BR (1) | BR9905152A (en) |
DE (1) | DE19851173C1 (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20040094523A1 (en) * | 2000-12-27 | 2004-05-20 | Thomas Beck | Method for laser welding a workpiece |
US20060138196A1 (en) * | 2003-09-12 | 2006-06-29 | Iwka Balg-Und Kompensatoren-Technologies Gmbh | Method for producing connecting ends on metal hoses and hose piece comprising such connecting ends |
US20130119025A1 (en) * | 2011-11-11 | 2013-05-16 | Sungwoo Hitech Co., Ltd. | Method of laser welding |
US20140352833A1 (en) * | 2013-06-03 | 2014-12-04 | Witzenmann Gmbh | Method and device for cutting wound hoses |
CN104520058A (en) * | 2012-08-08 | 2015-04-15 | 威茨曼有限公司 | Method and device for separating wound tubes having welded parts |
US20160016262A1 (en) * | 2014-07-17 | 2016-01-21 | Midway Products Group, Inc. | Laser welding process |
US11358238B2 (en) * | 2017-03-20 | 2022-06-14 | Kirchhoff Automotive Deutschland Gmbh | Method for laser welding end faces |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10217200A1 (en) * | 2002-04-18 | 2003-10-30 | Winter Pipeline Gmbh | Improving the quality of welding, coating and hardening and quenching of metal workpieces comprises using a laser arrangement of high power and liquid-cooled mirrors |
DE102015118476A1 (en) | 2015-10-29 | 2017-05-04 | Westfalia Metallschlauchtechnik Gmbh & Co. Kg | Apparatus and method for the production of winding tubes |
DE102015003467A1 (en) | 2015-03-19 | 2016-09-22 | Westfalia Metallschlauchtechnik Gmbh & Co. Kg | Assembly method and device for line elements |
EP3228418B1 (en) | 2015-03-19 | 2019-12-04 | Westfalia Metal Hoses GmbH | Device for the preparation of wound hoses |
DE102015115456A1 (en) | 2015-09-14 | 2017-03-16 | Westfalia Metallschlauchtechnik Gmbh & Co. Kg | Processing method and device for line elements |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4694137A (en) * | 1986-01-23 | 1987-09-15 | Westinghouse Electric Corp. | Laser welding head for sleeve-to-tube welding |
DE4411246A1 (en) | 1994-03-31 | 1995-10-05 | Witzenmann Metallschlauchfab | Connection end for winding hoses |
US5986236A (en) * | 1995-06-09 | 1999-11-16 | Bouygues Offshore | Apparatus for working on a tube portion using a laser beam, and use thereof on pipe tubes on a marine pipe-laying or pipe recovery barge |
US6060682A (en) * | 1997-11-13 | 2000-05-09 | Westbroek; Wido | Overlapping joint for laser welding of tailored blanks |
-
1998
- 1998-11-06 DE DE19851173A patent/DE19851173C1/en not_active Expired - Fee Related
-
1999
- 1999-11-04 US US09/433,575 patent/US6380509B1/en not_active Expired - Fee Related
- 1999-11-05 BR BR9905152-4A patent/BR9905152A/en not_active Application Discontinuation
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4694137A (en) * | 1986-01-23 | 1987-09-15 | Westinghouse Electric Corp. | Laser welding head for sleeve-to-tube welding |
DE4411246A1 (en) | 1994-03-31 | 1995-10-05 | Witzenmann Metallschlauchfab | Connection end for winding hoses |
US5986236A (en) * | 1995-06-09 | 1999-11-16 | Bouygues Offshore | Apparatus for working on a tube portion using a laser beam, and use thereof on pipe tubes on a marine pipe-laying or pipe recovery barge |
US6060682A (en) * | 1997-11-13 | 2000-05-09 | Westbroek; Wido | Overlapping joint for laser welding of tailored blanks |
Cited By (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20040094523A1 (en) * | 2000-12-27 | 2004-05-20 | Thomas Beck | Method for laser welding a workpiece |
US7057132B2 (en) * | 2000-12-27 | 2006-06-06 | Siemens Aktiengesellschaft | Method for laser welding a workpiece |
US20060138196A1 (en) * | 2003-09-12 | 2006-06-29 | Iwka Balg-Und Kompensatoren-Technologies Gmbh | Method for producing connecting ends on metal hoses and hose piece comprising such connecting ends |
US7111770B2 (en) * | 2003-09-12 | 2006-09-26 | Iwka Balg- U. Kompensatoren-Technologie Gmbh | Method for producing connecting ends on metal tubes and tube piece comprising such connecting ends |
CN100509246C (en) * | 2003-09-12 | 2009-07-08 | Boa巴尔格-康帕萨特伦技术有限公司 | Method for producing connecting ends on metal tubes and tube piece comprising such connecting ends |
US7753083B2 (en) * | 2003-09-12 | 2010-07-13 | BOA Balg- und Kompensatoren- Technologie GmbH | Method for producing connecting ends on metal hoses and hose piece comprising such connecting ends |
US9873168B2 (en) * | 2011-11-11 | 2018-01-23 | Sungwoo Hitech Co., Ltd. | Method of laser welding |
US20130119025A1 (en) * | 2011-11-11 | 2013-05-16 | Sungwoo Hitech Co., Ltd. | Method of laser welding |
CN104520058A (en) * | 2012-08-08 | 2015-04-15 | 威茨曼有限公司 | Method and device for separating wound tubes having welded parts |
US20150217352A1 (en) * | 2012-08-08 | 2015-08-06 | Witzenmann Gmbh | Method and device for separating wound tubes having welded parts |
CN104520058B (en) * | 2012-08-08 | 2017-07-25 | 威茨曼有限公司 | For separately having the method and apparatus of the takeup type metal hose of welding section |
US10589331B2 (en) * | 2012-08-08 | 2020-03-17 | Witzenmann Gmbh | Method and device for separating wound tubes having welded parts |
US20140352833A1 (en) * | 2013-06-03 | 2014-12-04 | Witzenmann Gmbh | Method and device for cutting wound hoses |
US10016847B2 (en) * | 2013-06-03 | 2018-07-10 | Witzenmann Gmbh | Method and device for cutting wound hoses |
US20160016262A1 (en) * | 2014-07-17 | 2016-01-21 | Midway Products Group, Inc. | Laser welding process |
US11358238B2 (en) * | 2017-03-20 | 2022-06-14 | Kirchhoff Automotive Deutschland Gmbh | Method for laser welding end faces |
Also Published As
Publication number | Publication date |
---|---|
BR9905152A (en) | 2000-08-29 |
DE19851173C1 (en) | 2000-05-04 |
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Legal Events
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Owner name: IWK REGLER UND KOMPENSATOREN GMBH, GERMANY Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:ARLT, ALFRED G.;REEL/FRAME:010566/0125 Effective date: 19991114 |
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Owner name: IWKA BALG- UND KOMPENSATOREN-TECHNOLOGIE GMBH, GER Free format text: CHANGE OF NAME;ASSIGNOR:IWK REGLER UND KOMPENSATOREN GMBH;REEL/FRAME:012302/0863 Effective date: 20010724 |
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